IDR Working Group G. Van de Velde
Internet-Draft Nokia
Intended status: Standards Track K. Patel
Expires: January 9, 2020 Arrcus
Z. Li
Huawei Technologies
H. Chen
Futurewei
July 8, 2019
Flowspec Indirection-id Redirect for SRv6draft-ietf0-idr-srv6-flowspec-path-redirect-02
Abstract
This document defines extensions to "FlowSpec Redirect to
indirection-id Extended Community" for SRv6. This extended community
can trigger advanced redirection capabilities to flowspec clients for
SRv6. When activated, this flowspec extended community is used by a
flowspec client to retrieve the corresponding next-hop and encoding
information within a localised indirection-id mapping table.
The functionality detailed in this document allows a network
controller to decouple the BGP flowspec redirection instruction from
the operation of the available paths.
Requirements Language
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this
document are to be interpreted as described in RFC 2119 [2].
Status of This Memo
This Internet-Draft is submitted in full conformance with the
provisions of BCP 78 and BCP 79.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress."
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Internet-Draft Indirection-id Redirect for SRv6 July 2019
6 - Node ID with SID/index in SRv6 (This means the indirection-id
is mapped to an SRv6 SID using the indirection-id as global SRv6
SID or index)
7 - Binding Segment ID with SID/index in SRv6 (This means the
indirection-id is mapped to an SRv6 binding SID using the
indirection-id as index for global offset in the SID space).
8 - Binding Segment ID with SID/index in SRv6 (This means
indirection-id is mapped to an SRv6 binding SID using the
indirection-id as global SRv6 SID).
Generalized indirection_id: 128-bit identifier used as indirection_id
3. Security Considerations
A system using "Redirect to indirection-id" extended community can
cause during the redirect mitigation of a DDoS attack overflow of
traffic received by the mitigation infrastructure.
4. Acknowledgements
This document received valuable comments and input from IDR working
group including Adam Simpson, Mustapha Aissaoui, Jan Mertens, Robert
Raszuk, Jeff Haas, Susan Hares and Lucy Yong.
5. Contributor Addresses
Below is a list of other contributing authors in alphabetical order:
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